2. Fix character-mode B-register handling in Processor and slightly optimize some stream syllables.
2. Fix I/O-finished interrupt signaling (or rather, the lack thereof) in IOUnit.
3. Change system option settings in ColdLoader based on recent MCP tests.
4. Commit minor improvements to SyllableDebugger.
5. Commit version of KERNEL object code for use with SyllableDebugger.
6. Commit Mark XVI DCMCP transcription as of 2013-03-17.